Regular Exact Models with Vanishing Anisotropy Generated using Van Der

1
Jefta M. Sunzu
Jefta M. Sunzu PhD Applied Mathematics, MSc-Applied Mathematics, PgD-Mathematical Sciences, BSc with Education,
2
Kasongo A. Mahali
Kasongo A. Mahali
1 University of Dodoma

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Regular Exact Models with Vanishing Anisotropy Generated using Van Der Banner
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In this paper, new exact models for Einstein field equations are generated using a Van der Waals equation of state. We consider anisotropic stellar objects with no electromagnetic field distribution. Our models contain previous results as a special case. Models generalized in our performance include a familiar uncharged Einstein model with no pressure anisotropy. It is interesting that our models indicate that when matter variables vanish, gravitational potentials remain constant. This condition agrees with Minkowski spacetime. The physical features of our models show that the gravitational potentials and matter variables are well behaved. We also compute relativistic stellar masses and radii consistent with the stars PSR J1614-2230, Vela X-1, 4U 1538-52, LMC X-4, SMC X-4, Cen X-3, Her X-1, SAX J1808. 4-3658 and EXO 1785-248.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

Jefta M. Sunzu. 2018. \u201cRegular Exact Models with Vanishing Anisotropy Generated using Van Der\u201d. Global Journal of Science Frontier Research - A: Physics & Space Science GJSFR-A Volume 18 (GJSFR Volume 18 Issue A1): .

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GJSFR Volume 18 Issue A1
Pg. 19- 30
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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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GJSFR-A Classification: FOR Code: 020399
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v1.2

Issue date

February 7, 2018

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English

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In this paper, new exact models for Einstein field equations are generated using a Van der Waals equation of state. We consider anisotropic stellar objects with no electromagnetic field distribution. Our models contain previous results as a special case. Models generalized in our performance include a familiar uncharged Einstein model with no pressure anisotropy. It is interesting that our models indicate that when matter variables vanish, gravitational potentials remain constant. This condition agrees with Minkowski spacetime. The physical features of our models show that the gravitational potentials and matter variables are well behaved. We also compute relativistic stellar masses and radii consistent with the stars PSR J1614-2230, Vela X-1, 4U 1538-52, LMC X-4, SMC X-4, Cen X-3, Her X-1, SAX J1808. 4-3658 and EXO 1785-248.

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Regular Exact Models with Vanishing Anisotropy Generated using Van Der

Jefta M. Sunzu
Jefta M. Sunzu University of Dodoma
Kasongo A. Mahali
Kasongo A. Mahali

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